muparserx-4.0.12-bp156.1.4

- Update to release 4.0.12
  * String constants starting with "or" was confused with
    operator during parsing step.
  * Equals operator behavior was inconsistent when checking
    boolean values. (no type check)

- Split fairly large API documentation from devel subpackage
- Use SVGs for inheritance graphs in API doc. Fixes unreproducible
  image rasterization (depends on CPU features), and the files
  are significantly smaller. Also avoids graphviz-gnome dep.

- Update to release 4.0.11
  * Resolve an incorrect assignment during multiplication
  * Logic operator lacked short-circuit feature